CVE-2024-8870

Forms for Mailchimp by Optin Cat – Grow Your MailChimp List <= 2.5.7 - Reflected Cross-Site Scripting

Published Oct 26, 2024 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
The Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.5.7. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-49443 The Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.5.6. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
History
Type Values Removed Values Added
Description The Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.5.6. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.5.7. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Title Forms for Mailchimp by Optin Cat – Grow Your MailChimp List <= 2.5.6 - Reflected Cross-Site Scripting Forms for Mailchimp by Optin Cat – Grow Your MailChimp List <= 2.5.7 - Reflected Cross-Site Scripting
References
Type Values Removed Values Added
Metrics epss

{'score': 0.00045}

epss

{'score': 0.00088}

Type Values Removed Values Added
First Time appeared Fatcatapps
Fatcatapps forms For Mailchimp By Optin Cat
CPEs cpe:2.3:a:fatcatapps:forms_for_mailchimp_by_optin_cat:*:*:*:*:*:wordpress:*:*
Vendors & Products Fatcatapps
Fatcatapps forms For Mailchimp By Optin Cat
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description The Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.5.6. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Title Forms for Mailchimp by Optin Cat – Grow Your MailChimp List <= 2.5.6 - Reflected Cross-Site Scripting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Apr 8, 2026, 5:04 PM
Reserved
Sep 15, 2024, 12:20 AM
Status
Deferred
Published
Oct 26, 2024, 4:15 AM
Modified
Jun 17, 2026, 8:23 AM